I was referring to the advanced fuel management system that changes the timing automatically by fuel octane. I understand you can buy a tune and CAI and do the same...but then that isn't the point of what I was saying..you don't have to do that with the new 2010 Mustang as it is already there just like the Bullitt. So yes, the 2010 does in fact have the same system as Bullitt making it different than the '09 GT as stated.

For those that care..Steeda has already stated that at this point they have no CAI developed for the 2010 because basically Ford already has the car optimized. Good job Ford!!

The engine is the same. 'Nuff said. I can't keep drilling this into your head without making a big hole.

The engine is the same. 'Nuff said. I can't keep drilling this into your head without making a big hole.

Did you not say yourself it was the same if you added an CAI and tunes and then it was the same as the Bullitt and 2010 GT? I stated the difference was the '09 Bullitt and the 2010 GT had the Advanced Fuel Management System that automatically adjust for the different fuels....which is the truth..it's on the Ford website should you care to actually read it. I'm talking specifically about the fuel management which makes it technically NOT THE SAME.

Did you not say yourself it was the same if you added an CAI and tunes and then it was the same as the Bullitt and 2010 GT? I stated the difference was the '09 Bullitt and the 2010 GT had the Advanced Fuel Management System that automatically adjust for the different fuels....which is the truth..it's on the Ford website should you care to actually read it. I'm talking specifically about the fuel management which makes it technically NOT THE SAME.

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You said the engines were not the same. Then you backpedaled and started talking about the fuel management systems being different (which is not the engine, by the way).

I'll let you in on something that is common knowledge to most folks: No production engine that has ever been in a Mustang will allow for MORE than maximum available horsepower with a higher octane fuel. Just the opposite is true--if you use lower octane fuel and the engine begins to ping (or knock, if you prefer), the knock sensors will detect the knock and will retard ignition timing, which results in less available maximum horsepower. Therefore, you can call it whatever you want, but all S197 Mustang engines will adjust for different fuels. But either way, it's not low octane that retards ignition timing, not high octane that advances ignition timing. In other words, timing will not be advanced with high octane fuel--it will be at the factory specifications. If you want to run advanced timing, you have to use a tuner to set it beyond factory specs...the fuel management system will not do it on it's own. If you have any more questions, just let me know.